Zoom lens, and imaging apparatus including the same

A zoom lens, comprising:

• a first lens unit having a positive refractive power;
• a second lens unit;
• a third lens unit having a negative refractive power;
• and
• a rear lens group including one or more lens units, wherein
• the first lens unit, the second lens unit, the third lens unit, and the rear lens group are disposed in order from an object side to an image side, and
• an interval between lens units disposed adjacent to each other changes during zooming,
• the rear lens group includes all of lens units disposed closer to an image than the third lens unit in the zoom lens,
• the first lens unit is stationary for zooming, and includes a first positive lens disposed closest to an object and having a positive refractive power,
• the rear lens group has a positive refractive power at a wide-angle end, and
• following inequalities are satisfied:
• 0
• .
• 0
• ⁢
• 5
• <
• f
• ⁢
• 1
• /
• ❘
• "\[LeftBracketingBar]"
• f
• ⁢
• 2
• ❘
• "\[RightBracketingBar]"
• <
• 2.
• ,
• and
• 0.4
• <
• Lt
• /
• f
• ⁢
• t
• <
• 0.
• 6
• ⁢
• 5
• ,
• where f1 denotes a focal length of the first lens unit, f2 denotes a focal length of the second lens unit, Lt denotes an overall lens length at a telephoto end, and ft denotes a focal length of an entire system at the telephoto end.